Automatic paint ball gun

ABSTRACT

A paint ball gun has a gun body and a trigger assembly therein. The gun body has a first chamber, a second chamber and a tunnel between the first and the second chambers. A rod, a percussion member and a shaft are provided in the first chamber, the second chamber and the tunnel respectively. A rear block connects the rod and the percussion member. A valve is provided in the first chamber and activated by the rod. A controller is provided in the gun body, has a guiding channel to be manipulative for communication the first chamber and the tunnel and an exhausting channel to be manipulative for communication with the tunnel. The trigger assembly is manipulative to issue the gas in the first chamber to the second chamber for movement the shaft and to exhaust the gas in the tunnel after moving the shaft out.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a paint ball gun, and moreparticularly to a paint ball gun, which the percussion member isreciprocated repeatedly and automatically.

2. Description of the Related Art

FIG. 11 shows a conventional paint ball gun, which has a gun body 6 anda stock 7. The gun body 6 has a rod 61 and a percussion member 62 toshoot paint balls, which are moved by a rear block 63. A barrel 65 isprovided at a front of the gun body 6, which is connected to a chamberinstalled with the percussion member 62. A pump 64 is mounted beside thebarrel 65, which has a piston 641 and a shaft 642 therein. The shaft 642is connected to the rear block 63 to drive it for movement. The stock 7has a trigger 71 and a three-position valve 72. The trigger 71 is pulledto activate the valve 72 and the valve 72 provides gas to the pump 64via a hose 66 to move the piston 641. The piston 641 moves thepercussion member 62 via the shaft 642, the rear block 63 and the rod 61to feed the paint ball for shooting.

The gun shoots the paint balls by high-pressure gas and some of the gasflows into the pump 64 to move the piston 641. To prevent thehigh-pressure gas from breaking the hose 66, a pressure adjuster 8 isprovided to reduce the pressure. The pressure adjuster 8 increases thecost of the paint ball gun and a front block 67 is provided to mount thepressure adjuster 8, the valve 72 and the pump 64 on the gun, whichincreases the cost again.

The pump 64, the piston 641, the shaft 642 and the pressure adjuster 8are exposed out of the gun without any shield for protection, they mightbe impacted unexpectedly. While the pump 64, the piston 641 or the shaft642 is impacted and deformed, they cannot work normally anymore.

SUMMARY OF THE INVENTION

The primary objective of the present invention is to provide a paintball gun, which is provided with a controller to control the gas issuinginto the chamber to move the shaft for reciprocation of the percussionmember automatically. The paint ball gun of the present invention has nothe pressure adjuster, the front block and the hose that decrease thecost of the gun.

The secondary objective of the present invention is to provide a paintball gun, which the controller is received in the gun. The shell of thegun shields the controller to prevent it from being impacted anddeformed. The paint ball gun functions normally even when the shootercarrying the gun for a heavy excise.

According to the objectives of the present invention, a paint ball guncomprises a gun body with a handle and a trigger assembly installed inthe handle. The gun body has a first chamber, a second chamber and atunnel between the first chamber and the second chamber. A rod isprovided in the first chamber, a percussion member is provided in thesecond chamber and a shaft is provided in the tunnel. A rear blockconnects the rod and the percussion member. A valve is provided in thefirst chamber and activated by the rod to issue gas into the secondchamber. A controller is provided in the gun body associated with thefirst chamber and the tunnel. The controller has a guiding channel to bemanipulative for communication the first chamber and the tunnel and anexhausting channel to be manipulative for communication with the tunnel.The trigger assembly is manipulative to issue the gas in the firstchamber to the second chamber for movement the shaft and to exhaust thegas in the tunnel after moving the shaft out.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a sectional view of a first preferred embodiment of thepresent invention;

FIG. 2 is an exploded view of the controller of the first preferredembodiment of the present invention;

FIG. 3 is a sectional view of the first preferred embodiment of thepresent invention, showing the action of how the high-pressure gas movesthe shaft;

FIG. 4 is a sectional view of the first preferred embodiment of thepresent invention, showing the guiding block returning for exhaustion ofthe gas;

FIG. 5 a sectional view of the first preferred embodiment of the presentinvention, showing the action of the rod;

FIG. 6 a sectional view of a second preferred embodiment of the presentinvention;

FIG. 7 is an exploded view of the controller of the second preferredembodiment of the present invention;

FIG. 8 is a sectional view of the second preferred embodiment of thepresent invention, showing the movement of the guiding block to let thehigh-pressure gas moving the shaft via the first section and the secondsection of the guiding block;

FIG. 9 is a sectional view of the second preferred embodiment of thepresent invention, showing the return of the guiding block to exhaustgas;

FIG. 10 is a sectional view of the second preferred embodiment of thepresent invention, showing the action of the rod, and

FIG. 11 is perspective view of the conventional paint ball gun.

DETAILED DESCRIPTION OF THE INVENTION

As shown in FIGS. from FIG. 1 to FIG. 5, a paint ball gun of the firstpreferred embodiment of the present invention has a gun body 1, whichhas a handle 17 and a trigger assembly 18 in the handle 17. The gun body1 has a first chamber 11 and a second chamber 12 therein, wherein a rod21 is mounted in the first chamber 11 and a percussion device 2 ismounted in the second chamber 12. A rear block 22 is provided in the gunbody 1 to connect the percussion device 2 and the rod 21 and a shaft 23is connected to the rear block 22 to move it. A valve 24 is mounted inthe first chamber 11 activated by the rod 21 to issue gas into thesecond chamber 12. A controller 3 is mounted in the gun body associatedwith the first chamber 11 and the shaft 23. The controller 3 has a firstchannel, which issue gas to the shaft 23 from the first chamber 11, anda second channel, which exhaust the gas out of the gun body 1. Thecontroller 3 is activated by the trigger assembly 18 for switch of thefirst channel and the second channel and to reciprocate the percussionmember 2 repeatedly.

In the first preferred embodiment of the present invention, the firstand the second chambers 11 and 12 are arranged in parallel in the gunbody 1 and an aperture 13 is provided to connect the first and thesecond chambers 11 and 12. The valve 24 is mounted at between the firstchamber 11 and the aperture 13. The rod 21 and the percussion device 2are mounted in left ends (referring to FIG. 1) of the first and thesecond chambers 11 and 12 respectively and are bonded to the rear block22. A barrel 14 is secured to the gun body 1 and is communicated withthe second chamber 12. An inlet portion 15 is mounted at a front of thegun body 1 and connected to the first chamber 11. The gun body 1 furtherhas a tunnel 16 between the first and the second chambers 11 and 12, inwhich the shaft 23 is received and is connected to the rear block 22. Aspring 231 is received in the tunnel 16 and fitted to the shaft 23. Thecontroller 3 is mounted at between the valve 24 and the inlet portion 15and beside the trigger assembly 18 of the handle 17. The triggerassembly 18 has a trigger 181 and a tenon 182 connected to the trigger181.

The controller 3 has a housing 31 and a chamber 311 in the housing 31.The housing 311 has two first bores 312 communicating the chamber 311with the first chamber 11 and two second bores 313 communicating thetunnel 16. A guiding block 32 is received in the chamber 311 of thecontroller 3 for movement. The guiding block 32 has a guiding channel321 therein and an annular exhausting channel 323 on a circumferencethereof. The exhausting channel 323 is communicated with the secondbores 313 of the housing 31 at a normal condition. A linkage 33 connectsthe guiding block 32 and the trigger 181 of the trigger assembly 18, sothat the guiding block 32 moved by pulling of the trigger 181.

As shown in FIG. 3 to FIG. 5, while the trigger 181 of the triggerassembly 18 is pulled, it moves the guiding block 32 downward via thelinkage 33 and the guiding channel 321 has ends communicated with thefirst bores 312 and the second bore 313 of the housing 311 respectively.High-pressure gas is issued into the first chamber 11 from the inletportion 15 and flows to the tunnel 16 via the guiding channel 321 tomove the shaft 23 and the rear block 22 backward. Now, the pain ball canrun into the second chamber 12 and the rod 21 is locked to the tenon 182of the trigger assembly 18 to be ready for shooting. In the meantime,the guiding block 32 is moved upward and the guiding channel 321 is notcommunicated with the first bores 312 and the second bore 313 of thehousing 311 anymore to stop issuing the high-pressure gas. Theexhausting channel 323 of the guiding block 32 now is communicated withthe second bores 313 of the housing 311 to exhaust the gas in the tunnel16 while the shaft 23 is moved back by the spring 231. Now, the triggerassembly 18 is pulled again to release the rod 21 and the rod 21 movesforward to activate the valve 24, so that the gas in the first chamber11 is issued into the second chamber 12 via the aperture 13 for shootingthe pain ball. In the meantime, the guiding block 32 is moved downwardto communicate the guiding channel 321 with the first bores 312 and thesecond bore 313 again and to issue the gas into the tunnel 16, so thatthe shaft 23 and the rear block 22 are moved backward again for the nexttime of shooting.

FIG. 6 to FIG. 10 show a paint ball gun of the second preferredembodiment of the present invention, which is similar to the paint ballgun of the first preferred embodiment, except that a controller 4 has ahousing 41 and a chamber 411 in the housing 41. A first guiding block 42and a second guiding block 43 are received in the chamber 411. The firstguiding block 42 is associated with the tunnel 16 and is manipulativefor rotation. The second guiding block 43 is associated with the tunnel16 and is fixed in the chamber 411. The first guiding block 42 isattached on the second guiding block 43 via contacting surfaces 421 and431. An axle 44 runs through the second guiding block 43 and is securedto the first guiding block 42. The axle 44 is driven by the triggerassembly 18 for rotation to rotate the first guiding block 42. Thecontroller has a guiding channel with a first section 422 in the firstguiding block 42 and a second section 432 in the second guiding block43. The first section 422 and the second section 432 of the guidingchannel are open at the contacting surfaces 421 and 431 of the first andsecond guiding blocks 42 and 43 respectively and are communicated with afirst bore 412 and a second bore 413 of the housing 411. The firstguiding block 42 has an exhausting channel 423 beside the first section422.

As shown in FIG. 8 to FIG. 10, while the trigger assembly is pulled, thetrigger 181 of the trigger assembly 18 rotates the axle 44 and the firstguiding block 42 to align the first section 422 of the guiding channelto the second section 432 of the second block 43 and to a second bore413 of the housing 41. High-pressure gas issued to the first chamber 11from the inlet portion 15 flows to the tunnel 16 via the first second422 and the second section 432 of the guiding channel to move the shaft23 and the rear block 22 backward. In the meantime, the percussionmember 2 and the rod 21 are moved backward to fee the pain ball to thesecond chamber 12. The rod 21 is engaged with the tenon 182 of thetrigger assembly to be ready for shooting. The first guiding block 42 isturned reversely to make the first section 422 of the first guidingblock 42 no longer aligned with the second bore 413 of the housing 41and the second section 432 of the second guiding block 43 and theexhausting channel 423 of the first guiding block 42 is aligned with thesecond bore 413 of the housing, so that the high-pressure gas is stoppedby the first guiding block 42 and the gas in the tunnel 16 is exhaustedout of the housing 41 via the second bore 314 while the shaft 23 returnsby the spring 231. Now, the trigger assembly 18 can be pulled again torelease the rod 21 to let it moves forward and activate the valve 24.And then, the gas in the first chamber 11 is issued to the secondchamber 12 via the aperture 13 to shoot the pain ball in the secondchamber 12. In the meantime, the first guiding block 42 is rotatedreversely to issue the gas into the tunnel 16 and move the shaft 23 andthe rear block 22 backward again.

The present invention provides the controller in the housing associatedwith the first chamber and the shaft to control the gas in the firstchamber to move the shaft and to reciprocate the percussion memberautomatically. The paint ball gun is provided with no the hose, thepressure controller and the front block as the conventional paint ballgun has. It reduces the cost of manufacture and increases thecompetition in the present market.

The controller is installed in the housing to be protected thereby. Inthe action of shooting, the controller is not easy to be impacted thatmakes sure the paint ball gun having a correct function of shooting andelongates the product's life.

1. A paint ball gun, comprising: a gun body with a handle and a triggerassembly installed in the handle, wherein the gun body has a firstchamber, a second chamber and a tunnel between the first chamber and thesecond chamber and a rod is provided in the first chamber, a percussionmember is provided in the second chamber and a shaft is provided in thetunnel; a rear block connecting the rod and the percussion member; avalve provided in the first chamber and activated by the rod to issuegas into the second chamber; a controller provided in the gun bodyassociated with the first chamber and the tunnel, wherein the controllerhas a guiding channel to be manipulative for communication the firstchamber and the tunnel and an exhausting channel to be manipulative forcommunication with the tunnel, whereby the trigger assembly ismanipulative to issue the gas in the first chamber to the second chamberfor movement the shaft and to exhaust the gas in the tunnel after movingthe shaft out.
 2. The paint ball gun as defined in claim 1, wherein thefirst chamber is parallel to the second chamber and an aperture isprovided to communicate the first chamber, the second chamber and thevalve is mounted at where adjacent to the aperture, the rod and thepercussion member are located at ends of the first chamber and thesecond chamber and are bonded to the rear block, a barrel is connectedto an end of the second chamber, an inlet portion is provided andcommunicated with an end of the first chamber, the tunnel is parallel tothe first chamber and the second chamber, the shaft in the tunnel has anend extruded out of the tunnel and bonded to the rear block, a spring isreceived in the tunnel and is fitted to the shaft, the controller islocated at between the valve in the first chamber and the inlet portionand adjacent to the trigger assembly in the handle and the triggerassembly has a trigger and a tenon connected to the trigger.
 3. Thepaint ball gun as defined in claim 2, wherein the controller has ahousing installed in the gun body and a chamber in the housing, thehousing has a first bore associated with the first chamber, a secondbore associated with the tunnel and a guiding block is received in thechamber of the controller for movement, which has the guiding channeltherein and the exhausting channel on a circumference thereof, whereinthe exhausting channel is communicated with the second bore in a normalcondition.
 4. The paint ball gun as defined in claim 3, wherein theguiding block is connected to the trigger assembly via a linkage, sothat the guiding is driven for movement by the activation of the triggerassembly.
 5. The paint ball gun as defined in claim 2, wherein thecontroller has a housing installed in the gun body and a chamber in thehousing, the housing has a first bore associated with the first chamber,a second bore associated with the tunnel and a first guiding block and asecond guiding block are received in the chamber of the controller,wherein the first guiding block is attached on the second guiding blockand is rotary, the guiding channel has a first section in the firstguiding block and a second section in the second guiding block and thefirst section and the second section of the guiding channel arecommunicated with the first bore and the second bore respectively andthe first guiding block has the exhausting channel, whereby the firstguiding block is rotated to communicate the first section and the secondsection of the guiding channel or not.
 6. The paint ball gun as definedin claim 5, wherein an axle runs through the second guiding block andbonds to the first guiding block and the trigger assembly is connectedto the axle to drive it rotating and to drive the first guiding blockrotating.